Canon Kabushiki Kaisha

Hiroaki Miyake

Yoshiya Nomura

Kenji Matsuda

Hideshi Kawaguchi

Yoshinori Sugiura

Hiroo Kobayashi

Yoshiro Tsuchiya

Tsuyoshi Waragai

Toshifumi Moritani

Tadashi Yagi

Hiroshi Yukimachi

Kazuo Shishido

Takahiro Azeta

Masahito Ohtsuka

Kaoru Sato

Yasushi Sato

Minoru Sato

Shinichi Sasaki

Junichi Kimizuka

Masaaki Saito

Masahiko Yashiro

Masahiko Yokota

Hideki Mori

Kouji Miura

Toshihiko Inuyama

Akihisa Kusano

Kazuhiko Okazawa

Takamasa Sawada

Yasuo Fujiwara

Toshiyuki Nagano

Naoki Okuda

Makoto Abe

Yoshiyuki Koshimizu

Naomasa Kimura

Chitose Tenpaku

Masakazu Mori

Toshiyuki Ito

Ryuji Araki

Masahito Otsuka

Takahiro Azeda

Takahiro Terao

Takao Yokomizo

Provided is an image forming apparatus capable of mounting an internal unit in a main body chassis thereof, in which a position of a sheet conveying portion for conveying a sheet to the internal unit, with respect to the internal unit is adjusted by a first adjustment portion, and a position of a sheet discharge portion which discharges the sheet having an image formed thereon, with respect to the internal unit is adjusted by a second adjustment portion.

Image forming apparatus with adjusting portions to adjust positions of conveying and discharge portions

A sheet conveying apparatus and an image forming apparatus of the present invention enable a user himself or herself to select a plurality of double-sided recording modes by use of one common image forming apparatus. Each of the sheet conveying apparatus and the image forming apparatus includes a first reversing member, provided in an apparatus main body, for reversing a sheet on which an image is recorded by an image forming unit, a conveying unit including a second reversing member for reversing the sheet on which the image is recorded by the image forming unit, and so provided as detachably attachable to the apparatus main body, and a double-sided conveying portion for conveying the reversed sheet again to the image forming unit in order to perform double-sided recording.

Sheet conveying apparatus and image forming apparatus

An image forming apparatus has a sheet support for accommodating an image-forming sheet; an image forming unit for forming an image on a sheet; a document reading section having a document placing table for reading image information of the document; an ADF in which a document is feedable to the document reading section and displaceable so as to allow placement of the document onto the document placing table; and a sheet discharging section on which a sheet with an image formed thereon by the image forming unit is discharged and stacked by arranging them in the image forming apparatus from the lower part thereof toward the upper part in order. The image forming apparatus further has a transferring section for transferring a sheet with an image formed thereon to the sheet discharging section which is held movably in the vertical direction.

Compact image forming apparatus with vertical arrangement

A sheet conveying apparatus includes a sheet constant speed conveying device for conveying a sheet at a predetermined speed, a sheet conveying path for guiding the sheet being conveyed by the sheet constant speed conveying device, a sheet reverse feeding rotary member pair capable of forwardly rotating to convey the sheet toward a downstream side and then reversely rotating to send the sheet reversely, a surface reverse conveying path branched from the sheet conveying path and adapted to guide the sheet reversely fed by the sheet reverse feeding rotary member pair, a trailing end detecting sensor disposed between the sheet constant speed conveying device and the sheet reverse feeding rotary member pair and adapted to detect a trailing end of the sheet conveyed through the sheet conveying path, and a control device for controlling rotation of the sheet reverse feeding rotary member pair in such a manner that the sheet can be conveyed at a higher speed than the predetermined speed when the trailing end of the sheet is detected by the trailing end detecting sensor.

Sheet conveying apparatus and image forming apparatus having the same

A sheet surface reversing device includes a sheet conveying path through which a sheet is conveyed, a reverse feeding device for reversely feeding the sheet conveyed through the sheet conveying path, a sheet surface reverse conveying path for directing the sheet reversely fed from the reverse feeding device branched from the sheet conveying path, and a conveying path changing member rotatably disposed at a branched portion between the sheet conveying path and the sheet surface reverse conveying path. When a distal end of the conveying path changing member abuts against an inner wall of the sheet conveying path, the distal end of the conveying path changing member guides the sheet to be reversely fed into the sheet surface reverse conveying path. In addition, an interference avoiding device is provided for avoiding interference between the sheet reversely fed and the distal end of the conveying path changing member on the inner wall of the sheet conveying path.

Sheet surface reversing device and image forming apparatus having the same

In a sheet conveying apparatus, starting sound is reduced and downsizing is contrived without causing any increase in cost. The sheet conveying apparatus is provided with a plurality of pairs of rotary members disposed along a sheet conveying path for guiding a sheet, and conveying the sheet, a plurality of rotary driving devices for rotating the pairs of rotary members, and a control device for staggering the starting time of each rotary driving device and starting the rotary driving devices.

A remanufacturing method of a process cartridge detachably mountable to an image forming apparatus includes disassembling the process cartridge into a first frame having a developer accommodating portion for accommodating a developer and a second frame having a developer carrying member for carrying the developer supplied from the developer accommodating portion toward an image bearing member, thus exposing an opening of the first frame for permitting movement of the developer from the first frame to the second frame; removing residual which is resulted from a covering member having been used for sealing the opening and which remains around the opening, wherein the covering member has a sealing portion for sealing the opening and an extension for permitting the sealing portion to be torn with a part thereof remaining around the opening to open the opening, by pulling the extension, wherein the residual is a part of the sealing portion; mounting a fresh covering member to seal the opening; then supplying the developer accommodating portion with a fresh developer; and then engaging the first and second frames together.

Remanufacturing method for process cartridge, process cartridge and image forming apparatus

A process cartridge that is detachably mountable to an image forming apparatus contains a photosensitive drum acting as an image bearing member and having opposed first and second ends. A developing roller and a charging roller are also provided in the process cartridge. A developing bias conductive member and a grounding conductive member are supplied at the first end of the drum in a direction perpendicular to a movement direction of the drum, and a charging bias conductive member for the charging roller is provided adjacent the second end of the drum.

Process cartridge detachably mountable to an image forming apparatus

A photosensitive drum usable with an image forming apparatus includes a cylindrical member having a photosensitive material at its surface; and juxtaposed helical gear and spur gear at a longitudinal end of the cylindrical member.

Photosensitive drum, process cartridge and image forming apparatus

The invention provides a sheet feeding device in which a lifter member of a lifter unit for maintaining the level of the topmost sheet of the sheets loaded in a sheet holding unit at a substantially constant height is made movable along the direction of removal of the sheet holding unit in order to move the moving lifter away from the sheet holding unit if the lifter being released downward gets caught by the sheet holding unit being removed, thus allowing reliable removal of the sheet holding unit.

Sheet feeding device with lifter member to hold sheets at predetermined

A process cartridge detachably mountable to a main assembly of an image forming apparatus includes a first frame; a second frame engageable with the first frame; an image bearing member; a process device actable on the image bearing member; an elastic sealing member interposed between the first and second frames engaged with each other, with the elastic sealing member locally compressed by a projection.

Process cartridge, image forming apparatus usable therewith and process

A process cartridge detachably mountable relative to a main assembly of an image forming apparatus includes an image bearing member; a process device actable on the image bearing member; an elastic device; a receptor for receiving a force against an elastic force of the elastic device in contact with the main assembly when the process cartridge is mounted to the main assembly of the image forming apparatus; where when the process cartridge is to be taken out of the main assembly of the image forming apparatus, the elastic device displaces the process cartridge by the elastic force of the elastic device.

Process cartridge with shutter for protecting photosensitive drum

A process cartridge detachably mountable to a main assembly of an image forming apparatus includes a frame; an image bearing member; a developing device; a toner accommodating device for accommodating toner to be supplied to said developing device; opening for supplying to said developing device the toner in said toner accommodating device; a toner seal removably mounted at said opening to close it; a gap in said frame to permit pulling of said toner seal; an elastic sealing member in contact with said toner seal to prevent leakage of the toner through the gap; wherein said toner seal is constructed such that said toner seal is out of contact with an end of said elastic sealing member upon pulling of said toner seal.

Process cartridge, image forming apparatus usable therewith and toner

A process cartridge detachably mountable to a main assembly of an image forming apparatus includes a frame; an image bearing member; a process device actable on the image bearing member; a projection formed on the frame and extended downwardly beyond a bottom surface of the frame.

Process cartridge, image forming apparatus usable therewith and image

A process cartridge includes a rotatable rotary member having a plurality of bearing attachment portions to which bearings are attachable. The plurality of bearing attachment portions are provided on the rotary member with different diameters. A method of reusing a rotation member that is supported at one of a plurality of coaxial rotation surfaces having different diameters includes detaching one of a plurality of bearing members that supports the rotation member at the one of the plurality of coaxial rotation surfaces. Another of the plurality of bearing members is then attached at a corresponding other of the plurality of coaxial rotation surfaces that has a different diameter than the one of the plurality of coaxial rotation surfaces.

Growing community of inventors

Ibaraki, Japan

Hiroaki Miyake